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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12439) Procedure V2
Date Mon, 02 Feb 2015 21:22:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14301960#comment-14301960
] 

stack commented on HBASE-12439:
-------------------------------

bq. No, Procedure is the internal name for "I'm doing something".

Its confusing swapping in Operation for Procedure when you've done all this work talking up
Procedures and of how Procedures are made of zero or more Sub-Procedures.

Ok on the rest [~mbertozzi] Looks great.



> Procedure V2
> ------------
>
>                 Key: HBASE-12439
>                 URL: https://issues.apache.org/jira/browse/HBASE-12439
>             Project: HBase
>          Issue Type: New Feature
>          Components: master
>    Affects Versions: 2.0.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>         Attachments: ProcedureV2.pdf, Procedurev2Notification-Bus.pdf
>
>
> Procedure v2 (aka Notification Bus) aims to provide a unified way to build:
> * multi-steps procedure with a rollback/rollforward ability in case of failure (e.g.
create/delete table)
> ** HBASE-12070
> * notifications across multiple machines (e.g. ACLs/Labels/Quotas cache updates)
> ** Make sure that every machine has the grant/revoke/label
> ** Enforce "space limit" quota across the namespace
> ** HBASE-10295 eliminate permanent replication zk node
> * procedures across multiple machines (e.g. Snapshots)
> * coordinated long-running procedures (e.g. compactions, splits, ...)
> * Synchronous calls, with the ability to see the state/result in case of failure.
> ** HBASE-11608 sync split
> still work in progress/initial prototype: https://reviews.apache.org/r/27703/



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